● Updated March 2026 · 14 min read · By Arch. Vincent Abuya
- 01 · Construction Cost Overview
- 02 · What Is a Maisonette?
- 03 · Typical Layout of a 4 Bedroom Maisonette
- 04 · Estimated Construction Cost
- 05 · Full Cost Table
- 06 · Stage-by-Stage Cost Breakdown
- 07 · Factors That Affect the Cost
- 08 · How Architectural Design Affects Cost
- 09 · Practical Tips for Homeowners
- 10 · Frequently Asked Questions
The cost of building a 4 bedroom maisonette in Kenya in 2025 typically ranges between KSh 8 million and KSh 18 million depending on floor area, finish specification, and site conditions. A standard 200 m² maisonette with mid-range finishes on a 40×80 plot in Nairobi costs approximately KSh 12–15 million to construct — excluding land, professional fees, and external works. This guide breaks down exactly where that money goes and what drives the differences between a KSh 8M and a KSh 18M build. For costs across all house types, see our complete guide to building costs in Kenya.
Construction Cost Overview — Maisonettes in Kenya 2025
A maisonette is Kenya's most popular aspirational residential format — it delivers a full family home with generous living space on a relatively compact plot. The multi-storey structure comes at a cost premium over single-storey construction, but on expensive urban land it delivers more square metres per unit of plot coverage than any bungalow could.
In 2025, maisonette construction costs range from KSh 55,000 per m² for a basic specification to KSh 100,000+ per m² for a premium finish. Most 4 bedroom maisonettes are built at KSh 65,000–80,000 per m² — a range that delivers a structurally sound, well-finished family home.
- ✓ Ceramic floor tiles
- ✓ Steel window frames
- ✓ Standard plumbing & wiring
- ✓ Simple roof design
- ✓ Porcelain tiles throughout
- ✓ Aluminium window frames
- ✓ Fitted kitchen & wardrobes
- ✓ Suspended gypsum ceilings
- ✓ Quality paint & finishes
- ✓ Imported porcelain or stone
- ✓ Curtain wall glazing
- ✓ Custom kitchen & joinery
- ✓ Feature ceilings & lighting
- ✓ Smart home & solar systems
What Is a Maisonette in Kenya?
In Kenya, a maisonette is a standalone two-storey (or occasionally three-storey) residential house that sits on its own plot, with all floors belonging to a single household. It differs from a flat in that it is an independent structure — not a unit within a larger apartment block. It differs from a villa primarily in scale and specification, though the terms are often used interchangeably for larger homes.
The defining structural feature of a maisonette is the reinforced concrete upper floor slab — a cast-in-place concrete deck that carries the upper floor loads down to columns, beams, and ultimately the foundation. This slab is the primary cost driver that makes maisonettes more expensive per square metre than single-storey bungalows of equivalent total floor area.
A 4 bedroom maisonette typically places the master bedroom and one or two secondary bedrooms on the upper floor, with the fourth bedroom (often used as a guest room or DSQ) and all living spaces — kitchen, dining, living room — on the ground floor. Some layouts place all four bedrooms upstairs with an entirely open-plan ground floor, which works well on compact urban plots.
Typical Layout of a 4 Bedroom Maisonette in Kenya
A standard 4 bedroom maisonette in Kenya covers 180–240 m² of total floor area across two storeys. The most common layout allocates approximately 90–120 m² per floor. Here is how a well-designed 200 m² maisonette on a 40×80 plot typically distributes its space:
Ground Floor (approx. 100 m²)
The ground floor of a 4-bedroom maisonette typically includes: an open-plan kitchen and dining area (28–35 m²), a living room (22–28 m²), a guest toilet or full guest bathroom, one bedroom (often a DSQ-style room or ground-floor guest room), a small utility room, and an entrance hall or foyer. A ground-floor bedroom is highly valued in Kenya for accommodating elderly parents or live-in staff.
Upper Floor (approx. 100 m²)
The upper floor accommodates the master bedroom suite with en-suite bathroom and walk-in wardrobe (22–30 m² combined), two secondary bedrooms (14–18 m² each), a shared family bathroom, and a landing or circulation space. Many clients also incorporate a small balcony off the master bedroom, which adds approximately KSh 80,000–200,000 to the project cost depending on the size and finish.
A double-height living space with statement staircase — a design feature that adds approximately KSh 600,000–1,200,000 to a standard maisonette build but dramatically elevates the design quality
AALIS Studios project reference: Our modern 4 bedroom maisonette on a 40×80 plot is one of our most-visited design showcases — a full walkthrough of how we deliver a spacious 4-bedroom family home within tight urban plot constraints.
Estimated Construction Cost of a 4 Bedroom Maisonette in Kenya
These estimates cover construction from foundation to completion including all finishes, fixed joinery, and M&E installations. They exclude: land purchase, professional fees (8–12% of construction cost), county approval and NCA fees, external works (gate, boundary wall, driveway, septic, water storage), and a recommended 10–15% contingency.
Premium master en-suite bathrooms from AALIS Studios maisonette projects — the master bathroom is typically the highest-spec finish room in a 4 bedroom maisonette
4 Bedroom Maisonette Cost Table — Kenya 2025
| Floor Area | Storeys | Finish Level | Cost per m² | Estimated Total |
|---|---|---|---|---|
| 160 m² | 2 | Basic | KSh 55,000–62,000 | KSh 8.8M – 9.9M |
| 180 m² | 2 | Basic | KSh 55,000–65,000 | KSh 9.9M – 11.7M |
| 180 m² | 2 | Standard | KSh 65,000–75,000 | KSh 11.7M – 13.5M |
| 200 m² | 2 | Standard | KSh 68,000–78,000 | KSh 13.6M – 15.6M |
| 220 m² | 2 | Standard | KSh 68,000–78,000 | KSh 15M – 17.2M |
| 200 m² | 2 | Premium | KSh 85,000–100,000 | KSh 17M – 20M |
| 240 m² | 2–3 | Premium | KSh 88,000–105,000 | KSh 21M – 25M+ |
| Typical range — 4 bedroom maisonette Kenya 2025 | KSh 8M – 25M+ | |||
Our pillar guide compares maisonettes, bungalows, villas, and luxury homes — with stage breakdowns, finish comparisons, and real KES examples.
Stage-by-Stage Cost Breakdown for a 4 Bedroom Maisonette
Understanding how construction cost is distributed across the stages of a maisonette build helps you plan your cash flow, identify where to invest and where to economise, and spot inflated contractor quotes. The figures below are indicative for a 200 m² mid-range specification maisonette in Nairobi.
The kitchen finish is the single largest variable in the finishes budget for a 4 bedroom maisonette — ranging from KSh 400,000 for a standard fit to KSh 2.5M+ for a custom imported kitchen
Factors That Affect the Cost of a 4 Bedroom Maisonette
How Architectural Design Controls Your Maisonette Cost
Of all residential building types, the maisonette is where professional architectural design delivers the most measurable return. The complexity of multi-storey construction creates more opportunities for costly errors, and professional design is the primary mechanism for preventing them.
Structural Coordination
The structural system of a maisonette — column grid, beam sizes, slab thickness, and reinforcement schedule — must be designed by a qualified structural engineer working from accurate architectural drawings. Without this coordination, contractors default to either over-specifying (wasting money) or under-specifying (creating safety risk). The structural drawings for a 4 bedroom maisonette typically cost KSh 40,000–80,000 as part of an architectural package — an investment that pays for itself many times over in avoided structural waste.
Slab Efficiency
The size and complexity of the upper floor slab is the biggest single structural cost variable in any maisonette. An architect who designs with structural efficiency in mind — minimising cantilevers, aligning upper and lower walls, avoiding eccentric column loads — can reduce slab cost by KSh 200,000–600,000 on a standard 4 bedroom project compared to an uncoordinated layout.
Avoiding Mid-Project Changes
Design changes in a maisonette are significantly more expensive than in a bungalow. Moving a column, changing a wall position, or adding a balcony after the slab is cast requires structural intervention that can cost KSh 150,000–500,000 per change. A fully detailed drawing package — including every column position, beam size, slab thickness, and opening dimension — eliminates ambiguity and protects you from these costs entirely.
"Every shilling invested in professional architectural and structural drawings for a maisonette returns at least five shillings in avoided structural waste, contractor claims, and remedial work. On multi-storey construction, the drawings are not a formality — they are the project." — Arch. Vincent Abuya, AALIS Studios
A full design walkthrough of how AALIS Studios delivered a modern 4 bedroom maisonette on a compact urban plot — with floor plans, 3D renders, and specification notes.
